Abstract:
A resonant structure for a micromechanical device. The resonant structure comprises a beam and at least one mass attached to the beam. The resonant structure is arranged to have a predominantly rotational excitation mode and an excitation plane in which motion of the excited resonant structure predominantly takes place in use, the at least one mass having a geometry such that none of the principal axes of the rotational inertia tensor of the resonant structure are normal to the excitation plane.
Abstract:
The invention concerns an electromechanical resonator comprising a vibrating body (4), at least one excitation electrode (14, 16) and at least one detection electrode (10, 12), characterized in that the vibrating body comprises a first portion (20) made of a first material, with a first Young modulus, and a second portion (22), made of a second material, with a second Young modulus, lower than the first Young modulus, said second portion being located at least partly opposite the detection electrode (10,12).
Abstract:
L'invention concerne un dispositif comprenant un résonateur (1) formé d'une couche piézoélectrique (3) en sandwich entre deux électrodes métalliques (4, 5), le résonateur étant posé sur une poutre en suspension, le dispositif comprenant des moyens (20, 21, 22, 23) pour déformer ladite poutre (2) par effet bilame.
Abstract:
A method and resulting formed device are disclosed wherein the method combines polysilicon surface-micromachining with metal electroplating technology to achieve a capacitively-drive, lateral micromechanical resonator with submicron electrode-to-resonator capacitor gaps. Briefly, surface-micromachining is used to achieve the structural material for a resonator, while conformal metal-plating is used to implement capacitive transducer electrodes. This technology makes possible a variety of new resonator configurations, including disk resonators and lateral clamped-clamped and free-free flexural resonators, all with significant frequency and Q advantages over vertical resonators. In addition, this technology introduces metal electrodes, which greatly reduces the series resistance in electrode interconnects, thus, minimizing Q-loading effects while increasing the power handling ability of micromechanical resonators.
Abstract:
상보형금속산화물반도체(CMOS) 기판과통합된미세가공된초음파트랜스듀서들뿐만아니라이러한디바이스들의제작방법들이설명된다. 제작은 2개의별개의웨이퍼본딩단계를수반할수 있다. 웨이퍼본딩은기판(302) 내에밀봉된캐비티들(306)을제작하는데 이용될수 있다. 웨이퍼본딩은또한, 기판(302)을 CMOS 웨이퍼와같은다른기판(304)에본딩하는데 이용될수 있다. 적어도제2 웨이퍼본딩이저온에서수행될수 있다.